Polycom (RMX) 1500 User Manual

Chapter 4-Additional Conferencing Information

Polycom, Inc.

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Video endpoints that do not support SIP Content (such as PVX), can receive Content on 

the People channel if the conference is set to Send Content to Legacy Endpoints. For more 

details see, "Sending Content to Legacy Endpoints (AVC Only)” on page

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SIP Clients supporting BFCP over UDP, when connected to conferences on the RMX, can 

share Content with endpoints supporting the following Content sharing protocols: 
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Guidelines:
For SIP Clients that support both BFCP/TCP and BFCP/UDP:
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The preferred protocol is BFCP/UDP.

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When used in Cascading conferences, the Cascade Link must be H.323.

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BFCP/UDP is supported in both IPv4 and IPv6 addressing modes.

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BFCP utilizes an unsecured channel (port 60002/TCP) even when SIP TLS is enabled. If 

security is of higher priority than SIP content sharing, SIP People+Content can be 

disabled. To do this manually add the ENABLE_SIP_PEOPLE_ PLUS_CONTENT 

System Flag to the System Configuration and set its value to NO.

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SIP People+Content and BFCP capabilities are by default declared to all endpoints. If, 

however, the endpoint identity is hidden by a proxy server, these capabilities will not 

be declared by the RMX. Capabilities declaration is controlled by the 

ENABLE_SIP_PPC_FOR_ALL_USER_AGENT System Flag. 
The default value of the ENABLE_SIP_PPC_FOR_ALL_USER_AGENT System Flag is 

YES resulting in BFCP capability being declared with all vendors’ endpoints unless it is 

set to NO. When set to NO, the RMX will declare SIP People+Content and BFCP 

capabilities to Polycom and Avaya endpoints.

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The CFG_KEY_ENABLE_FLOW_CONTROL_REINVITE System Flag should be set to 

NO when SIP BFCP is enabled.

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If these System Flags don’t exist in the system, they must be manually added. For more 

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BFCP capabilities are not supported in Microsoft ICE environment.

Dial-out Connections:
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For dial-out connections to SIP Clients, BFCP/UDP protocol can be given priority by 

adding the adding the SIP_BFCP_DIAL_OUT_MODE System Flag to system.cfg and 
setting its value to UDP.